Add motivation quote feature to smoking tracking API

- Introduced a new database model `SmokeMotivationQuote` for storing motivational quotes.
- Added a new API endpoint `GET /api/v1/smoke/motivation` to retrieve motivation quotes for users.
- Updated the main.go file to include the new model in the auto-migration process.
- Enhanced smoke_routes.go to register the new motivation route with the smoke handler.

cmd/api/main.go

@@ -60,6 +60,7 @@ func main() {
 		&smokemodel.SmokeAIAdvice{},
 		&smokemodel.SmokeAIAdviceUnlock{},
 		&smokemodel.SmokeAINextSmoke{},
+		&smokemodel.SmokeMotivationQuote{},
 	); err != nil {
 		log.Fatalf("auto migrate failed: %v", err)
 	}

internal/routes/smoke_routes.go

@@ -26,6 +26,7 @@ func registerSmokeRoutes(protected *gin.RouterGroup, smokeHandler *smokehandler.
 		smoke.GET("/logs/:id", smokeHandler.Get)
 		smoke.POST("/logs/:id", smokeHandler.Update)
 		smoke.DELETE("/logs/:id", smokeHandler.Delete)
+		smoke.GET("/motivation", smokeHandler.Motivation)
 
 		// AI 戒烟建议（会员优先；非会员需看广告解锁）
 		smoke.GET("/ai/advice", smokeHandler.GetAIAdvice)

internal/smoke/handler/smoke_motivation_handler.go

@@ -0,0 +1,33 @@
+package handler
+
+import (
+	"net/http"
+	"time"
+
+	"github.com/gin-gonic/gin"
+
+	"wx_service/internal/middleware"
+	"wx_service/internal/model"
+)
+
+func (h *SmokeHandler) Motivation(c *gin.Context) {
+	user, ok := middleware.CurrentUser(c)
+	if !ok {
+		c.JSON(http.StatusUnauthorized, model.Error(http.StatusUnauthorized, "未登录或登录已过期"))
+		return
+	}
+
+	profile, err := h.smokeProfileService.Get(c.Request.Context(), int(user.ID))
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, model.Error(http.StatusInternalServerError, "获取基础信息失败，请稍后重试"))
+		return
+	}
+
+	result, err := h.smokeLogService.Motivation(c.Request.Context(), int(user.ID), time.Now().In(time.Local), profile)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, model.Error(http.StatusInternalServerError, "生成激励语失败，请稍后重试"))
+		return
+	}
+
+	c.JSON(http.StatusOK, model.Success(result))
+}

internal/smoke/model/smoke_motivation.go

@@ -0,0 +1,29 @@
+package model
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+// SmokeMotivationQuote 存储不同场景的激励语模板（可附带 AI 提示词）。
+type SmokeMotivationQuote struct {
+	ID        uint           `gorm:"primaryKey;autoIncrement;comment:记录ID" json:"id"`
+	Scene     string         `gorm:"column:scene;size:40;index:idx_smoke_motivation_scene;comment:场景类型" json:"scene"`
+	Type      string         `gorm:"column:type;size:30;comment:文案类型" json:"type"`
+	Message   string         `gorm:"column:message;type:text;comment:展示文案" json:"message"`
+	AIPrompt  string         `gorm:"column:ai_prompt;type:text;comment:AI提示词" json:"ai_prompt,omitempty"`
+	Enabled   bool           `gorm:"column:enabled;default:true;comment:是否启用" json:"enabled"`
+	Weight    int            `gorm:"column:weight;default:1;comment:权重(越大越优先)" json:"weight"`
+	CreatedAt time.Time      `gorm:"comment:创建时间" json:"created_at"`
+	UpdatedAt time.Time      `gorm:"comment:更新时间" json:"updated_at"`
+	DeletedAt gorm.DeletedAt `gorm:"index;comment:删除时间" json:"-"`
+}
+
+func (SmokeMotivationQuote) TableName() string {
+	return "fa_smoke_motivation_quote"
+}
+
+func (SmokeMotivationQuote) TableComment() string {
+	return "戒烟-激励语模板"
+}

internal/smoke/service/smoke_motivation_service.go

@@ -0,0 +1,115 @@
+package service
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"gorm.io/gorm"
+
+	smokemodel "wx_service/internal/smoke/model"
+)
+
+type SmokeMotivation struct {
+	Message string `json:"message"`
+	Type    string `json:"type"`
+}
+
+func (s *SmokeLogService) Motivation(ctx context.Context, uid int, asOf time.Time, profile *smokemodel.SmokeUserProfile) (SmokeMotivation, error) {
+	home, err := s.HomeSummary(ctx, uid, asOf)
+	if err != nil {
+		return SmokeMotivation{}, err
+	}
+
+	minutesSinceLast := -1
+	if home.LastSmokeAt != nil {
+		diff := int(asOf.Sub(*home.LastSmokeAt).Minutes())
+		if diff < 0 {
+			diff = 0
+		}
+		minutesSinceLast = diff
+	}
+
+	dailyTarget := 0
+	if profile != nil && profile.BaselineCigsPerDay > 0 {
+		dailyTarget = profile.BaselineCigsPerDay
+	}
+
+	quitMotivation := ""
+	if profile != nil && len(profile.QuitMotivations) > 0 {
+		quitMotivation = profile.QuitMotivations[0]
+	}
+
+	scene, fallback := buildMotivationScene(home, minutesSinceLast, dailyTarget, quitMotivation)
+	if quote, ok, err := s.loadMotivationQuote(ctx, scene); err != nil {
+		return fallback, err
+	} else if ok {
+		return SmokeMotivation{Message: quote.Message, Type: quote.Type}, nil
+	}
+
+	if scene != "default" {
+		if quote, ok, err := s.loadMotivationQuote(ctx, "default"); err != nil {
+			return fallback, err
+		} else if ok {
+			return SmokeMotivation{Message: quote.Message, Type: quote.Type}, nil
+		}
+	}
+
+	return fallback, nil
+}
+
+func buildMotivationScene(home SmokeHomeSummary, minutesSinceLast int, dailyTarget int, quitMotivation string) (string, SmokeMotivation) {
+	if home.ResistedCount > 0 && minutesSinceLast >= 0 && minutesSinceLast < 30 {
+		return "recent_resist", SmokeMotivation{
+			Message: "太棒了！你刚刚成功抵抗了一次烟瘾",
+			Type:    "praise",
+		}
+	}
+
+	if dailyTarget > 0 && home.TodayCount < int(float64(dailyTarget)*0.5) {
+		return "below_half_target", SmokeMotivation{
+			Message: "今天的表现非常出色，继续保持！",
+			Type:    "encourage",
+		}
+	}
+
+	if dailyTarget > 0 && home.TodayCount == dailyTarget-1 {
+		return "near_limit", SmokeMotivation{
+			Message: "还剩最后一支配额，考虑把它留到睡前？",
+			Type:    "hint",
+		}
+	}
+
+	if dailyTarget > 0 && home.TodayCount > dailyTarget {
+		msg := "没关系，明天是新的一天。"
+		if quitMotivation != "" {
+			msg = msg + "记住你为什么要戒烟：" + quitMotivation
+		}
+		return "over_target", SmokeMotivation{
+			Message: msg,
+			Type:    "comfort",
+		}
+	}
+
+	return "default", SmokeMotivation{
+		Message: "保持连胜纪录！",
+		Type:    "encourage",
+	}
+}
+
+func (s *SmokeLogService) loadMotivationQuote(ctx context.Context, scene string) (smokemodel.SmokeMotivationQuote, bool, error) {
+	var quote smokemodel.SmokeMotivationQuote
+	if err := s.db.WithContext(ctx).
+		Where("scene = ? AND enabled = 1", scene).
+		Order("weight DESC, id ASC").
+		First(&quote).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return smokemodel.SmokeMotivationQuote{}, false, nil
+		}
+		return smokemodel.SmokeMotivationQuote{}, false, err
+	}
+	if quote.Message == "" || quote.Type == "" {
+		return smokemodel.SmokeMotivationQuote{}, false, nil
+	}
+	return quote, true, nil
+}